Hyperliquid has unveiled its fee structure for outcome tokens, a crucial step towards the mainnet launch, as the platform prepares to compete with established players like Kalshi and Polymarket in the burgeoning prediction market space, which saw a 300% surge in trading volume to $63.5 billion in 2025. The newly announced fee structure reveals that opening a position is free, with fees only applicable when closing or settling a trade, and outlines six scenarios for minting, trading, burning, and settlement. Additionally, traders utilizing Hyperliquid's aligned quote tokens will benefit from reduced taker fees and increased maker rebates.
The introduction of outcome tokens, as part of the HIP-4 upgrade, will enable users to trade binary contracts on real-world events, alongside perpetuals and spot positions, within a single account, positioning Hyperliquid to rival platforms like Polymarket. Following the success of its previous HIP-3 upgrade, which has driven over 35% of the platform's trading volume since its introduction in October 2025, Hyperliquid is now gearing up for the mainnet launch of its outcome tokens, currently available on testnet.